Magnetic susceptibility studies on Bi2O3-PbO-As2O3-MnO glasses

Authors
Ardelean, I Simon, S Peteanu, M Simon, V Ciorcas, F Bob, C
Citation
I. Ardelean et al., Magnetic susceptibility studies on Bi2O3-PbO-As2O3-MnO glasses, MATER LETT, 39(1), 1999, pp. 42-45
Citations number
17
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS LETTERS
ISSN journal
0167577X → ACNP
Volume
39
Issue
1
Year of publication
1999
Pages
42 - 45
Database
ISI
SICI code
0167-577X(199904)39:1<42:MSSOBG>2.0.ZU;2-M
Abstract
The valence states of manganese ions and the interactions involving them we re investigated for xMnO .(100 - x)[Bi2O3 . PbO . As2O3] glasses with 0 < x less than or equal to 30 mol% by means of the temperature dependence of th e magnetic susceptibility. Up to x = 5 mol% of both Mn2+ and Mn3+ ions are evidenced. For higher MnO content (x > 5 mol%), the manganese ions in bival ent valence state dominate. For the most part, manganese ions participate i n negative superexchange interactions as MnO content exceeds 3 mol%. (C) 19 99 Elsevier Science B.V. All rights reserved.